Gemstone



FIG. 1 is a top plan view of a gemstone embodying my new design;

FIG. 2 is a bottom view thereof; and,

FIG. 3 is a front elevational view thereof, the rear elevational view, right side elevational view and left side elevational view appearing the same as the front elevational view. 

CLAIM The ornamental design for a gemstone, as shown and described. 